The battery leds would not display a full charge when the fuel guage button was depressed.Additionally, when the battery was connected to the software interface it was determined that the battery could not communicate, receive a charge, or discharge its cells.The battery was inserted into a freedom driver and the battery would not power the driver; with the driver plugged in to wall power and a known functioning battery installed, the customer returned battery was installed and the driver alarmed as it is designed.This confirmed the customer-reported issue.The root cause of the battery's inability to charge or discharge was caused by unrecoverable discharge of the cells resulting in the battery being unable to communicate serially and initiate charging.Syncardia has a corrective and preventive action (capa) to address the inability of the user being able to detect when a freedom onboard battery is disabled.Syncardia has completed its investigation and is closing this file.(b)(4) follow-up report 1.
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